The objective of this study was to figure out whether or not using story mapping technique was effective to improve students’ writing skill in narrative texts. This study used quasi experimental design. The population of this study was ten grade students of MA Darul Falah Sirahan Cluwak Pati in the academic year of 2016/2017 with the total number of students was 68 students. The writer used purposive sampling technique in which there were two classes taken as samples, class X D as control class and X C as experimental class. The instrument of study used writing test. The writer conducted pretest and post-test. Pretest was given to both groups before treatments. A post-test was given after treatment. The data from two tests were scored used SPSS for Windows version 23.0 to analyze the result of pretest and post-test.
The result of pretest showed that the mean scores of experimental class was 60.21 while control class was 59.53. After conducting the treatments, the writer gave the post test. The result of post test showed that the mean scores of experimental class was 76.68 meanwhile control class was 70.91. T-test calculation showed that there was a significance difference. It was supported by T-test analysis between pretest and post-test in experimental class that sig. (2-tailed) 0.001 < 0.05 It means that Ho was rejected and H1 was accepted. As a result, it could be concluded that the use of story mapping technique was effective in improving students’ writing skill in narrative text.

Keywords: Story Mapping Technique, Writing, Narrative Text